Process of forming- dlphenyii oxid



recon MwJOHlLIN, or SYRACUSE, NEW some, essxonon 'ro SEMET SUI,VAY Comp rant, on ernaou'snnnw roan, a oonronn'rron or'nn'w YORK.

.PRGOESS 01E FURMING' IDIIHE NYL OKID.

intense Ito throwing.

it has heretofore been known that by fus ing a sul'tonate, such as sodium benzene eultonate, with an alkali suchas caustic soria, the corresponding phenate is produced, and also that by substitutiiigthe phenate for the alkali in such fusion an aromatic ether is proclucecl. i

In the productionot' the phenate in this manner enough alkali is employed to effect as complete a conversion of the sullonateas possible.

ll have'founcl that ii, in effecting the reaction of ,thesulto'nate with the alkali, in-

steacl of employing'suflicient alkali to effect the complete conversion of the suli'oi'iate the proportion of alkali 1s reduced so to leave a part out the sulionate unacteti upon at the temperature employed, ancl the proe css is then continued at the higher temperatore required, the reaction between the sulfonote and the phenute is directly effected and the ether is produced in a continuous process.

Thus the formation oi the ether is ac- .Specification of Letters Patent.

Patented Man 2 2;, 192i,

Application filed July 24, 1.919. Serial No. 312,960.

proportions. In practical have found approximately per cent. of the amount ol alkali theoretically requlrecl to combine with all the sulfonat e a desirable proportion.

The mixture is then heated in a closed retort or chamber to the reaction temperature until the reaction between the sult'onate and theallrah is practically c'omplete'ol, as will be inchcated by the cessation of formation of Water from the reaction.

The temperature is then raised to such a polnt as to effect reaction between the sullfo nateancl phenate present 2'. c. to appronimately 420 U, and the diphenyl onicl will be formed and will distil oil and be con-- 4 densecl and collectecloutsidc the chaniben This is continued. until the reaction between the sulfonate and phenate is completedt lln conducting the operation 'care shoulcl be taken that the temperature is not raiserl to? such a point as to cause decomposition ot the sul'tonate, l a

The diphenyl onid vapor that passes Ofil trom the chamber is condensed in any. suit able manner as by passing it through cooling coils, and is collected. inliquicl form.

lav means o'l my invention I am. able to i a 'prooluce (hphenyl omel lrom a sulfonate ano an alkali n one continuous operationnith consequent. simplicity of procedure anti economy the advantage ct which will readily apparent to those. shillecl in the "What I clann as new and desire to secure by'lietters Patent is The process of forming (liphenyl oniol' which consists in heating" to a combining complishetl. in a much more, simple and ecekhelnperature so as to form a phenate a min nomical manner than hasfheretofore been possible.

in carrying;- my invention into el'lect l min together a'suitable sultonate such as sodium benzene sultt'onate and an'alkali, such as caustic socia in such proportions that when the reaction is complete at'theinitial combining; temperature the excess oi sulionate and the formed phenate will be present, as nearly as possible, in combining ture of sodium benzene sullonate and caustic soda in such proportions as to leave unconcbinedl a portlon of the sulfonate and con-- tinuing the operation at such temperature as to effect reaction between the uncornbinetl eul'fonate and the formed phenate to term the cliphenyl oxicl.

In testimony whereof I have alliiterl my signature this 22d day of July, 1919.

' JACOB M.;JOHLllIl-ll fil 

